Nothing stops Foreign Affairs Minister Nkosazana Dlamini-Zuma from standing for more than one position, according to the ANC.
Her office also indicated that she would not publicly declare her preferred position.
Party spokesperson Tiyani Rikhotso said that it was up to Dlamini-Zuma to choose which position she preferred.
Dlamini-Zuma has been nominated for the party's deputy presidency by four provinces aligned to President Thabo Mbeki, while the five provinces backing her ex-husband ANC deputy president Jacob Zuma prefer her as the national chairperson.
"A candidate can be nominated for more than one position. She can also approach the Electoral Commission and inform them which position she chooses. It's up to her," said Rikhotso.